Describe the flow of air through the respiratory system.

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09-11-2016
Biology

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Describe the flow of air through the respiratory system.

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GomoLomo GomoLomo · Answer 1 · 2016-11-09T22:36:33+01:00

Diaphragm contracts, which increases volume of thorax as ribs/ lungs move up and out.
Pressure decrease draws air into the lungs (through mouth, trachea, bronchi, bronchioles into alveoli.)
Useful gases (Oxygen) are absorbed into the blood through diffusion in alveoli.
Harmful gases in blood (CO2) diffuse across alveoli to be breathed out.
Diaphragm relaxes which causes volume of thorax to decrease, which pushed air out through the mouth.

mayajoosub mayajoosub · Answer 2 · 2019-03-31T09:54:28+02:00

mayajoosub mayajoosub

31-03-2019

Air enters through your nose and mouth. It travels through the pharynx and trachea to the bronchi. In the lungs, air enters the aveoli where oxygen is transferred into the bloodstream.

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